Abdominal exercise apparatus



FIG. 1 is a front perspective view of the exercise apparatus.

FIG. 2 is a front view of the exercise apparatus.

FIG. 3 is a rear view of the exercise apparatus.

FIG. 4 is a left side view of the exercise apparatus.

FIG. 5 is a right side view of the exercise apparatus.

FIG. 6 is a top view of the exercise apparatus; and,

FIG. 7 is a bottom view of the exercise apparatus.

The broken line showing of the abdominal exercise apparatus is for the purpose of illustrating portions of the article that forms no part of the claimed design. 

CLAIM The ornamental design for an abdominal exercise apparatus, as shown and described. 